01 -
Preheat oven to 325°F (163°C). Generously grease and lightly flour a bundt pan, then set aside.
02 -
In a large mixing bowl, cream together the softened butter and butter-flavored shortening until smooth. Add both the brown and granulated sugars, blending thoroughly until light and fluffy.
03 -
Add eggs one by one, mixing well after each addition. Fold in vanilla extract until fully combined.
04 -
In a separate bowl, whisk together sifted flour, baking powder, and salt.
05 -
Gradually add the dry mixture to the wet mixture, alternating with buttermilk and heavy cream. Begin and end with the flour mixture. Mix thoroughly, scraping down sides as needed.
06 -
Gently fold in toffee baking bits. Add pecan pieces if desired.
07 -
Pour batter evenly into prepared bundt pan. Tap the pan gently to level batter and release air bubbles. Bake on the middle oven rack for 70 minutes, or until a tester inserted in the center comes out clean.
08 -
Remove cake from oven and allow it to cool in the pan for 10–15 minutes. Transfer cake to a wire rack and let cool completely before frosting.
09 -
In a large saucepan over medium-low heat, combine sweetened condensed milk and brown sugar. Stir constantly until gentle bubbles form on the surface without boiling rapidly. Reduce heat if necessary to avoid burning.
10 -
Continue cooking and stirring for about 5 minutes or until the mixture thickens. Remove pan from heat and stir in butter and vanilla, mixing vigorously until smooth and glossy.
11 -
Drizzle the hot caramel frosting evenly over the completely cooled cake. Sprinkle with pecan pieces and additional toffee bits as desired.
12 -
Allow the cake to set until the caramel frosting begins to firm. Slice and serve; best enjoyed with a scoop of vanilla ice cream.